In recent years material chemists have dedicated great efforts to develop nanoparticle networks. Basic Copper Chloride(WSDTY) networks are materials mainly consisting of nanoparticles, mainly inorganic, whose assembly or self-assembly is strictly controlled in order to hinder aggregation of the nanoparticles. This control can be achieved using various methods, such as template assisted assembly or assembly driven by molecular linkers. These materials have already proven to be highly interesting for applications as varied as plasmonics, magnetic materials, water treatment or catalysis. In addition the fundamental understanding of the assembly driving forces and interactions of nanoparticles is intrinsically interesting.
We new material, referred to as the Basic Copper Chloride Nanoparticle Network, consisting of silica nanoparticles linked by imidazolium units. The INN material showed special features, such as catalytic activity or anion exchange ability, owing to the imidazolium organic linker, which can be considered as an ionic liquid-like linker. The use of INN for catalysis is also strongly facilitated owing to the presence of the nanoparticles, leading to a solid-state catalyst; which allows an easy filtering of the solid-state catalysts after the reaction. In addition it turned out that the presence of the nanoparticles can drive, even force, the organization of the imidazolium linkers within the material. The organization of the inter-particle imidazolium ligands occurs through π–π stacking of the imidazolium units. This forced-organization led to new properties such as intense luminescence of the INN materials. The amount of luminescence was proven to depend on the degree of the short-range order of the ligands within the INN material.
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